Signed-off-by: Emilio G. Cota <c...@braap.org>
---
tcg/i386/tcg-target.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index 887f22f..6600c45 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -1123,6 +1123,13 @@ static void tcg_out_jmp(TCGContext *s, tcg_insn_unit
*dest)
tcg_out_branch(s, 0, dest);
}
+static inline void tcg_out_fence(TCGContext *s, uint8_t op)
+{
+ tcg_out8(s, 0x0f);
+ tcg_out8(s, 0xae);
+ tcg_out8(s, op);
+}
+
#if defined(CONFIG_SOFTMMU)
/* helper signature: helper_ret_ld_mmu(CPUState *env, target_ulong addr,
* int mmu_idx, uintptr_t ra)
@@ -2088,6 +2095,16 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode
opc,
}
break;
+ case INDEX_op_fence_load:
+ tcg_out_fence(s, 0xe8);
+ break;
+ case INDEX_op_fence_full:
+ tcg_out_fence(s, 0xf0);
+ break;
+ case INDEX_op_fence_store:
+ tcg_out_fence(s, 0xf8);
+ break;
+
case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
case INDEX_op_mov_i64:
case INDEX_op_movi_i32: /* Always emitted via tcg_out_movi. */
@@ -2226,6 +2243,9 @@ static const TCGTargetOpDef x86_op_defs[] = {
{ INDEX_op_qemu_ld_i64, { "r", "r", "L", "L" } },
{ INDEX_op_qemu_st_i64, { "L", "L", "L", "L" } },
#endif
+ { INDEX_op_fence_load, { } },
+ { INDEX_op_fence_store, { } },
+ { INDEX_op_fence_full, { } },
{ -1 },
};
--
1.9.1
